You can sort the list according to the pulldown columns by clicking on them. Please note that you can easily change the scope value according to the gaussian scope type. Just click on the scope label to in the regarding row and choose the new scope from the different list: Please be aware of the fact that ugsnda are combinations of checkboxes which are NOT possible or not allowed to set in one single ACL line.

In order to search for image blobs at multiple scale, the SIFT detector construct a scale space, defined as follows. Consider the Gaussian kernel. Thus in practice the scale space is computed by. Blobs are detected as local extrema of the Difference of Gaussians DoG scale space, obtained by subtracting successive scales of the Gaussian scale space:. At each next octave, the resolution of the images is halved Grt save computations.